Loopback; Scramble - H3C MSR 20-20 Command Reference Manual

loopback

Syntax
View
Parameter
Description
Example

scramble

Syntax
View
Parameter
Description
loopback { cell | local | payload | remote }
undo loopback
ATM E3/T3 interface view
cell: Internal cell loopback, used to check whether the local end physical chipset is
working properly
local: Internal loopback, used to check whether the local service chip is working
properly.
payload: External payload loopback, used to check whether payload framing is
normal.
remote: External line loopback, used to check whether the remote end is working
properly.
Use the loopback command to configure the loopback mode on the ATM E3/T3
interface.
Use the
undo loopback
By default, loopback is disabled.
# Enable external payload loopback on ATM E3/T3 interface 5/0.
<Sysname> system-view
[Sysname] interface atm 5/0
[Sysname-Atm5/0] loopback payload
scramble
undo scramble
ATM E3/T3 interface view
None
Use the command to enable payload scrambling on the ATM E3/T3
scramble
interface. This, however, does not affect cell headers.
Use the undo scramble
By default, payload scrambling is enabled on an ATM E3/T3 interface.
command to disable loopback.
command to disable payload scrambling.
125